Draft-producing apparatus



F. A. ALLINGER.

DRAFT PRODUCING APPARATUS.

APPLICATION-FILED my I0, 1915.

Patented Aug. 15, 1916.

entrain. era rne rarnn r FRANK A. ALLINGER, OF LOS ANGELES, CALIFGBNIA, ASSIG-NOR F (ENE-THIRD T0 CHRIST VOL-Z AND ONE-THIRD TO FORNIA.

W. A. KEITH, BOTH OF LOS ANGELES, CALI- DRAFT-PRODUCING APPARATUS.

Application filed May 10, 1915.

To all whom it may concern.-

Be it known that I, FRANK A. ALLINGER, a citizen of the United States, residing at Los Angeles, in the. county of Los Angeles and State of California, have invented new and useful Improvements in Draft-Produo ing Apparatus, of which the following is a specification.

This invention relates to draft apparatus for locomotives.

It is the principal object of this invention to provide a forced draft apparatus which is operated by the steam from the locomotive engine cylinders, and which is adjustable as to the draft pressure produced in the smokebox of the locomotive.

It is usual in locomotives to provide an exproducing haust nozzle which discharges intoa petticoat pipe, the petticoat pipe being disposed below the smoke-stack. The effect upon the fire depends upon the quantity and quality of the fuel, the condition of the outer atmosphere and the load on the engine. As these factors are variable the present constructlon in which the petticoat pipe is fixed in position does not produce the most efficient operation for every condition of the fuel, atmosphere or load.

I obviate the above objections by providing aconstruction in which the petticoat pipe is fixed below the smoke-stack and a second petticoat pipe is disposed below the first, the latter being adjustable so that the opening to the smoke-box between the petticoat pipes may be varied. I attain these objects by the embodiment of my invention illustrated in the accompanying drawlng, in which- Figure l is a vertical section through the smoke-box and forced draft construction of a locomotive. Fig. 2 is an enlarged detail view in side elevation illustrating the petticoat pipe construction. Fig. 3 is a cross-section on the line 33 of Fig. 2. Fig. 4 1s a detail of an adjusting means for the petticoat pipe.

More specifically, 5 indicates the usual shell of the smoke-box of a locomotive, 6 an exhaust nozzle of the type common in locomotives and which is connected to the exhaust of the engine cylinders.

7 denotes generally the petticoat pipe construction, and S the usual smoke stack.

My invention resides more particularly in the petticoat pipe construction. A frame Specification of Letters Patent.

' with a Patented 15, 1216.. Serial No. 26,938.

work includes standards 9 and 10 secured to the shell 5 by rivets or any other well known construction, and is braced by rods 11 and 13. Secured to the frame work in fixed position IS a petticoat pipe 14 of the usual form flared lower end 15. The pipe 1 1 is supported upon the frame work by means of rods 16 and 17 which are fixedly secured to the frame work and to the pipe by rivets or any other means which is found expedient.

Disposed below pipe 14 is a second petticoat plpe 18 having a flared lower end 19 disposed immediately above the exhaust nozzle 6. The petticoat pipe is held fixedly 1n position by the supporting rods 20 and 21 which are secured to the pipe 18 and the frame work. Slidingly mounted over the upper end of pipe 18 is a pipe 22 which has secured to it outstanding ears 23 and 2f. The cars 23 and 24 may be formed on a strap which is bent to conform to the curvature of the pipe 22 and riveted or fixedly secured thereto by any well known means, the ends of the strap being bent outward to form the ears and at right angles thereto as indicated at 26 to form means for attaching the link age for moving the pipe 22.

The linkage comprises a lever 27 which is pivotally secured to the frame member 9. Connecting the levers 27 and 28 is a link 29. A link 30 is pivotally secured to lever 27 and to car 23. The lever 27 comprises one arm of a yoke which extends across the pipe 14 and has a second arm 31 pivotally connected to the frame member 10. Secured to this arm is a link 32 similar to the link 30 and is connected at the other end to the car 24. Lever 28 is secured to a shaft 83 and is preferably integral therewith. This lever extends through the shell of the smoke-box and is shown as turned upwardly at right angles as indicated at 34. rirm 3% operates over the surface of a segmental ring 35 in which there are indentations, the arm 3 lhaving sufficient spring to force itself into the indentations and thereby form an automatic lock for adjustably positioning it. The construction of the arm 34 and the segment is however no part of my invention, as it may be found convenient to attach linkage to the arm 34 so that it may be operated from the locomotive cab or any other convenient position.

In the operation of the locomotive if it is desired to force a greater volume of smoke from the s1noke-box without increasing the exhaust from the cylinders the arm 34: is rocked so that pipe 22 is moved downward to produce a greater opening between the smoke-box and the petticoat pipes. If the reverse condition is desired the arm 34 is rocked in the opposite direction. It is obvious that rocking of arm 34: causes a rocking of lever 28 and a resultant movement of link 29 which rocks lever 27 moves link 30 and thereby causes a movement of pipe 22.

What I claim is:

' The combination of a smoke-stack, a petticoat pipe fixedly disposed below and spaced Copies of this patent may be obtained for five cents each, by addressing able pipe, and an exhaust nozzle disposed below said second petticoat pipe.

In witness that I claim the foregoing I have hereunto subscribed my name this 24th day of April, 1915.

FRANK A. ALLINGER.

the Commissioner of Patents,

Washington, D. C. 

